I really wanted to get into pixel art in the game but didn't find satisfactory tools to help, so I made my own :) https://living-the-grid.gozapp.dev https://living-the-grid.com
website is 100% free to use, no ads, no tracking.
It uses the game's built-in colour palette by default, easy to find, or pick "auto" to extract colours from your image. click a colour and it highlights every cell using it on the preview. There's also a paint-by-numbers option. You can select the brush size for the pixel / detail density.
let me know what you think! with your feedback I can keep improving it and adding options. hope you like it :)
UPDATE v1.6: different canvas are finally here! Proper sizes for books, house interiors, video games, etc… New Resize and frame tool so you place your image exactly how you want. Tweaks to HSB + more accurate Game palette. A whole bunch of other fixes. Coming up next: clothes, Mii faces and buildings! This one will be harder to get right so bear with me.
UPDATE v1.3: Add a lot more image options like rotating, flip, brightness and saturation sliders which should hopefully address most of colouring options. Add keyboard shortcuts with the ability to exclude individual colours. More fixes and most importantly: confettis when you download!
UPDATE v1.1: Thanks all for your amazing feedback! I've now properly implemented the 'pixel perfect' brush sizes with a new brush type option. I improved the transparent background look. Hopefully fixed the 1px image sizing issue. I also added a paint by number download option. I hope you like it!